The complete set of test equipment for KDCJ-1800kV/180kJ impulse voltage generator is suitable for the following specific test scenarios:
1. High voltage insulator impact withstand voltage test
Conduct lightning impulse full wave (1.2/50 μ s) and operational impulse (250/2500 μ s) withstand tests on ceramic insulators, composite insulators, etc. to verify their insulation performance under overvoltage, in compliance with JB/T 7616 and DL/T 557 standards.
2. Impact test for bushings (such as transformer bushings and wall bushings)
Simulate the impact of lightning or overvoltage on the external insulation and internal structure of the casing, and evaluate whether flashover or breakdown will occur.
3. Impulse test of current/voltage transformers
According to the requirements of GB/T 7449, conduct lightning impulse test on the transformer to verify the reliability of its main insulation and inter turn insulation.
4. Type testing of power transformers and reactors
During the research and development or manufacturing stage, conduct lightning impulse tests on large transformers to verify the insulation strength of windings to ground and between phases.
5. Verification of GIS (gas insulated switchgear) and high-voltage switch components
Perform impulse voltage tests on insulation supports, isolation fractures, and other components in GIS to ensure safe operation under extreme overvoltage conditions.
6. Standard tests of scientific research and certification testing institutions
Used for conducting authoritative testing in high-voltage laboratories that comply with national standards such as GB/T 16927 and GB/T 311, supporting product type testing, sampling, or international certification (such as IEC benchmarking).
✅ This equipment is particularly suitable for use in indoor high-voltage testing halls, and can operate continuously to meet the full chain high-voltage testing needs from product development, factory quality inspection to third-party certification.
The PD Patrol Tester is suitable for the following typical application scenarios and environments:
Substation and distribution room
Conduct live patrol inspection on switch cabinet and GIS composite apparatus in operation without power failure.
Power maintenance and operation&maintenance site
It is used for periodic partial discharge detection of transformer, cable terminal, busbar and other equipment, so as to discover potential insulation hazards in time.
Power equipment manufacturer
The high voltage equipment shall be subject to partial discharge test before delivery to ensure that the product quality meets the standards.
Rail transit and industrial plant area
Detect partial discharge in traction substation and HV distribution system to ensure power supply safety.
Laboratory and Testing Agency
Carry out partial discharge mechanism research, equipment performance verification or third-party inspection and certification.
✅ The equipment can work stably in the conventional industrial or outdoor environment of - 20 ℃ - 50 ℃ and humidity of 10% - 90% (non-condensing). It is light and portable (only 0.85kg) and suitable for mobile inspection and on-site fast diagnosis.
This product is applicable to power system, high and low voltage switchgear, electrical equipment manufacturing, rail transit, new energy power station and other industrial scenes. It can conduct high-precision contact resistance detection for switches, circuit breakers, cable joints, welding seams, etc. in the normal workshop or site environment with - 10 ℃ - 40 ℃ and humidity<80% RH.
KDSL-82-500A short-time overcurrent tester is applicable to various power and industrial site environments, mainly including:
Substation and power distribution room: used for transformation ratio and polarity verification after installation of current transformer (CT) and short-time overcurrent test of relay protection device;
Power construction and maintenance site: quickly verify CT performance before equipment is put into operation or during maintenance to ensure accurate and reliable protection system;
Electrical equipment manufacturer and laboratory: carry out ex-factory test, metering verification or R&D test of transformer;
Railway, petrochemical, metallurgical, mining and other enterprise owned power stations: used for regular detection and troubleshooting of internal power supply and distribution systems.
The equipment conforms to GB6587.1-86 Group III standard, and can operate stably in indoor and outdoor environment of - 10 ℃ -+50 ℃, humidity ≤ 90% (non-condensing) and altitude below 1500m. It supports AC 220V single-phase power supply and is compact and easy to carry. It is especially suitable for mobile operation and site use with limited space.
KDSL-82-500A short-time overcurrent tester is applicable to various industrial and power field environments, and its main applications include:
Substation and power supply station: used for transformation ratio and polarity verification of current transformer (CT) and short-time overcurrent test of primary bus protection device;
Power engineering and commissioning site: quickly verify CT installation quality in new or reconstructed projects to ensure accurate action of relay protection system;
Manufacturer of electrical equipment: function and accuracy test shall be carried out before ex-factory of transformer, switch cabinet, protection device and other products;
Railway, petrochemical, metallurgical, mining and other industrial and mining enterprises: used for maintenance and overhaul of their own power distribution systems to ensure reliable protection of key equipment under fault current;
Measurement and testing and the third party laboratory: carry out high-accuracy current comparison, transformer verification and other standardized tests.
The equipment conforms to GB6587.1-86 Group III instrument standard, and can work stably in indoor and outdoor environment with temperature of - 10 ℃ -+50 ℃, humidity ≤ 90% (non-condensation) and altitude below 1500m. Integrated structure design, light and portable, support AC 220V single-phase power supply, without complex auxiliary equipment, especially suitable for space limited or mobile operation scenes, is an ideal tool for efficient, safe and accurate on-site electrical test.
KDSL-S500A three-phase large current generator is applicable to a variety of power and industrial test scenarios, and its main application environments include:
Low-voltage complete switchgear manufacturer: used for temperature rise test and type test of GCK, MNS, GGD and other switchgear, meeting the requirements of GB 7251.1-5 standards;
Power system operation&maintenance and inspection center: conduct verification and function test on circuit breaker, thermal relay, contactor and other protection devices in substation, power supply station or maintenance base;
Electrical laboratory and quality inspection organization: carry out type test, ex-factory inspection and third-party certification test of electrical products, and support long-term stable output;
Project commissioning site: it can be deployed in the power distribution room, power plant or construction site, and the installed equipment shall be subject to power-on verification and protection characteristics verification;
University and scientific research unit: used for teaching demonstration or research on thermal effect and current-carrying capacity of electrical equipment.
The working environment of the equipment is wide (- 10 ℃ -+50 ℃, humidity ≤ 90% non-condensation, altitude ≤ 1500 m), with IP20 protection grade and forced air cooling system, which can operate stably for a long time in the normal indoor industrial environment, and also suitable for temporary outdoor operation. Its high-precision, strong anti-jamming capability and full-automatic control characteristics ensure that the high-current test task can still be completed safely and efficiently in a complex electromagnetic environment.
Introduction to Application Environment of KDSL-S500A Three-phase Large Current Generator (simplified version)
KDSL-S500A three-phase large current generator is applicable to the site and laboratory environment of power system, industrial and mining enterprises, electrical equipment manufacturing and testing units, and is mainly used for power-on verification and overload/short circuit characteristic test of thermal relay, motor protector, circuit breaker, contactor, switch cabinet, protection panel and other equipment.
The equipment conforms to GB6587.1-86 Group III instrument standard, can operate stably in indoor or outdoor conventional environment, and adapt to substation, distribution room, maintenance workshop, commissioning site and other working conditions. It is small in size, light in weight, strong in anti-jamming capability, supports AC 380V/220V three-phase four-wire power supply, outputs 0~500A continuously adjustable standard sine wave large current, meets the test requirements of high accuracy (0.5 level) and high stability (current stability of 0.5%), and is an ideal tool for verification and function verification of electrical protection devices.
Application of ball gap gauge:
When conducting the experiment, connect the ball gap device in parallel with the test sample. The ball gap device itself has a protective resistor of 1 ohm per volt in series. First, adjust the ball gap to 60% of the test voltage (the discharge distance of the ball gap can be checked from the ball gap discharge voltmeter below, Tables 1 and 2). At this time, the test sample should be connected simultaneously. Measure the readings of the test transformer and low-voltage side voltmeter when the ball gap is discharged (take the average of 3-4 times), and then measure the readings of the voltmeter at 70% and 80% of the test voltage in the same way. Use this three-point line value as a curve (mostly a straight line), and then extend this curve (mostly calculated proportionally) to a position 10-15% higher than the required test voltage, as a discharge protection against overvoltage that may occur during the withstand voltage test process.
